I have Ubuntu with grub2 installed in an Apple Macbook pro with dual boot (using rEFIt), and I would like to use grub2 to boot the LiveCD ISO image of a system based in Debian too (CrunchBang). The ISO image is saved in the same hard disk, same partition as Ubuntu.

I can easily boot many other LiveCD ISO images, but I cannot boot this one, and I cannot boot the MacOS system, from the grub menu, either. The installation of Ubuntu left a couple of menu entries to boot MacOS, but they never worked. SO I don't know if it is possible to boot them, and how.

I have tried many options, but the menuentry I am trying now to boot crunchBang is this one:

3 Answers
3

You can't boot mac from grub2 using BIOS mode, and linux won't wok well in EFI mode on a MBP. So booting mac from grub2 is not going to work. refit is a good workaround. You can set it to boot linux first in the config file stored in /efi/refit/.